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  <title>搜索插入位置</title>
</head>
<body>
  <script>
    function fn(nums, target) {
      let len = nums.length;
      for (var i = 0; i < len; i++) {
        if (target <= nums[i]) {
          return i
        }
      }
      return len
    }
    console.log(fn([1, 3, 5, 6], 5))
  </script>
</body>
</html>